JoKo appears to now be up against Gabriela Dabrowski on the WTA scores schedule, so it's quite possible Misaki Doi has withdrawn. Listed for after the Goerges-Karatantcheva match (currently 6-2 6-6 to Goerges).
Good win for Heather, would have expected her to beat Gajdosova but after 4 defeats in a row getting a win is always more difficult. Heather has generally done well this year when she has got through her first match so hopefully that trend continues.